Kconfig 6.8 KB

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  1. #
  2. # CPU Frequency scaling
  3. #
  4. menu "CPU Frequency scaling"
  5. source "drivers/cpufreq/Kconfig"
  6. if CPU_FREQ
  7. comment "CPUFreq processor drivers"
  8. config X86_ACPI_CPUFREQ
  9. tristate "ACPI Processor P-States driver"
  10. select CPU_FREQ_TABLE
  11. depends on ACPI_PROCESSOR
  12. help
  13. This driver adds a CPUFreq driver which utilizes the ACPI
  14. Processor Performance States.
  15. This driver also supports Intel Enhanced Speedstep.
  16. For details, take a look at <file:Documentation/cpu-freq/>.
  17. If in doubt, say N.
  18. config ELAN_CPUFREQ
  19. tristate "AMD Elan SC400 and SC410"
  20. select CPU_FREQ_TABLE
  21. depends on X86_ELAN
  22. ---help---
  23. This adds the CPUFreq driver for AMD Elan SC400 and SC410
  24. processors.
  25. You need to specify the processor maximum speed as boot
  26. parameter: elanfreq=maxspeed (in kHz) or as module
  27. parameter "max_freq".
  28. For details, take a look at <file:Documentation/cpu-freq/>.
  29. If in doubt, say N.
  30. config SC520_CPUFREQ
  31. tristate "AMD Elan SC520"
  32. select CPU_FREQ_TABLE
  33. depends on X86_ELAN
  34. ---help---
  35. This adds the CPUFreq driver for AMD Elan SC520 processor.
  36. For details, take a look at <file:Documentation/cpu-freq/>.
  37. If in doubt, say N.
  38. config X86_POWERNOW_K6
  39. tristate "AMD Mobile K6-2/K6-3 PowerNow!"
  40. select CPU_FREQ_TABLE
  41. help
  42. This adds the CPUFreq driver for mobile AMD K6-2+ and mobile
  43. AMD K6-3+ processors.
  44. For details, take a look at <file:Documentation/cpu-freq/>.
  45. If in doubt, say N.
  46. config X86_POWERNOW_K7
  47. tristate "AMD Mobile Athlon/Duron PowerNow!"
  48. select CPU_FREQ_TABLE
  49. help
  50. This adds the CPUFreq driver for mobile AMD K7 mobile processors.
  51. For details, take a look at <file:Documentation/cpu-freq/>.
  52. If in doubt, say N.
  53. config X86_POWERNOW_K7_ACPI
  54. bool
  55. depends on X86_POWERNOW_K7 && ACPI_PROCESSOR
  56. depends on !(X86_POWERNOW_K7 = y && ACPI_PROCESSOR = m)
  57. default y
  58. config X86_POWERNOW_K8
  59. tristate "AMD Opteron/Athlon64 PowerNow!"
  60. select CPU_FREQ_TABLE
  61. depends on EXPERIMENTAL
  62. help
  63. This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors.
  64. For details, take a look at <file:Documentation/cpu-freq/>.
  65. If in doubt, say N.
  66. config X86_POWERNOW_K8_ACPI
  67. bool
  68. depends on X86_POWERNOW_K8 && ACPI_PROCESSOR
  69. depends on !(X86_POWERNOW_K8 = y && ACPI_PROCESSOR = m)
  70. default y
  71. config X86_GX_SUSPMOD
  72. tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation"
  73. depends on PCI
  74. help
  75. This add the CPUFreq driver for NatSemi Geode processors which
  76. support suspend modulation.
  77. For details, take a look at <file:Documentation/cpu-freq/>.
  78. If in doubt, say N.
  79. config X86_SPEEDSTEP_CENTRINO
  80. tristate "Intel Enhanced SpeedStep"
  81. select CPU_FREQ_TABLE
  82. select X86_SPEEDSTEP_CENTRINO_TABLE if (!X86_SPEEDSTEP_CENTRINO_ACPI)
  83. help
  84. This adds the CPUFreq driver for Enhanced SpeedStep enabled
  85. mobile CPUs. This means Intel Pentium M (Centrino) CPUs. However,
  86. you also need to say Y to "Use ACPI tables to decode..." below
  87. [which might imply enabling ACPI] if you want to use this driver
  88. on non-Banias CPUs.
  89. For details, take a look at <file:Documentation/cpu-freq/>.
  90. If in doubt, say N.
  91. config X86_SPEEDSTEP_CENTRINO_ACPI
  92. bool "Use ACPI tables to decode valid frequency/voltage (deprecated)"
  93. depends on X86_SPEEDSTEP_CENTRINO && ACPI_PROCESSOR
  94. depends on !(X86_SPEEDSTEP_CENTRINO = y && ACPI_PROCESSOR = m)
  95. default y
  96. help
  97. This is deprecated and this functionality is now merged into
  98. acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of
  99. speedstep_centrino.
  100. Use primarily the information provided in the BIOS ACPI tables
  101. to determine valid CPU frequency and voltage pairings. It is
  102. required for the driver to work on non-Banias CPUs.
  103. If in doubt, say Y.
  104. config X86_SPEEDSTEP_CENTRINO_TABLE
  105. bool "Built-in tables for Banias CPUs"
  106. depends on X86_SPEEDSTEP_CENTRINO
  107. default y
  108. help
  109. Use built-in tables for Banias CPUs if ACPI encoding
  110. is not available.
  111. If in doubt, say N.
  112. config X86_SPEEDSTEP_ICH
  113. tristate "Intel Speedstep on ICH-M chipsets (ioport interface)"
  114. select CPU_FREQ_TABLE
  115. help
  116. This adds the CPUFreq driver for certain mobile Intel Pentium III
  117. (Coppermine), all mobile Intel Pentium III-M (Tualatin) and all
  118. mobile Intel Pentium 4 P4-M on systems which have an Intel ICH2,
  119. ICH3 or ICH4 southbridge.
  120. For details, take a look at <file:Documentation/cpu-freq/>.
  121. If in doubt, say N.
  122. config X86_SPEEDSTEP_SMI
  123. tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)"
  124. select CPU_FREQ_TABLE
  125. depends on EXPERIMENTAL
  126. help
  127. This adds the CPUFreq driver for certain mobile Intel Pentium III
  128. (Coppermine), all mobile Intel Pentium III-M (Tualatin)
  129. on systems which have an Intel 440BX/ZX/MX southbridge.
  130. For details, take a look at <file:Documentation/cpu-freq/>.
  131. If in doubt, say N.
  132. config X86_P4_CLOCKMOD
  133. tristate "Intel Pentium 4 clock modulation"
  134. select CPU_FREQ_TABLE
  135. help
  136. This adds the CPUFreq driver for Intel Pentium 4 / XEON
  137. processors.
  138. For details, take a look at <file:Documentation/cpu-freq/>.
  139. If in doubt, say N.
  140. config X86_CPUFREQ_NFORCE2
  141. tristate "nVidia nForce2 FSB changing"
  142. depends on EXPERIMENTAL
  143. help
  144. This adds the CPUFreq driver for FSB changing on nVidia nForce2
  145. platforms.
  146. For details, take a look at <file:Documentation/cpu-freq/>.
  147. If in doubt, say N.
  148. config X86_LONGRUN
  149. tristate "Transmeta LongRun"
  150. help
  151. This adds the CPUFreq driver for Transmeta Crusoe and Efficeon processors
  152. which support LongRun.
  153. For details, take a look at <file:Documentation/cpu-freq/>.
  154. If in doubt, say N.
  155. config X86_LONGHAUL
  156. tristate "VIA Cyrix III Longhaul"
  157. select CPU_FREQ_TABLE
  158. depends on ACPI_PROCESSOR
  159. help
  160. This adds the CPUFreq driver for VIA Samuel/CyrixIII,
  161. VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T
  162. processors.
  163. For details, take a look at <file:Documentation/cpu-freq/>.
  164. If in doubt, say N.
  165. comment "shared options"
  166. config X86_ACPI_CPUFREQ_PROC_INTF
  167. bool "/proc/acpi/processor/../performance interface (deprecated)"
  168. depends on PROC_FS
  169. depends on X86_ACPI_CPUFREQ || X86_SPEEDSTEP_CENTRINO_ACPI || X86_POWERNOW_K7_ACPI || X86_POWERNOW_K8_ACPI
  170. help
  171. This enables the deprecated /proc/acpi/processor/../performance
  172. interface. While it is helpful for debugging, the generic,
  173. cross-architecture cpufreq interfaces should be used.
  174. If in doubt, say N.
  175. config X86_SPEEDSTEP_LIB
  176. tristate
  177. default X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI || X86_P4_CLOCKMOD
  178. config X86_SPEEDSTEP_RELAXED_CAP_CHECK
  179. bool "Relaxed speedstep capability checks"
  180. depends on (X86_SPEEDSTEP_SMI || X86_SPEEDSTEP_ICH)
  181. help
  182. Don't perform all checks for a speedstep capable system which would
  183. normally be done. Some ancient or strange systems, though speedstep
  184. capable, don't always indicate that they are speedstep capable. This
  185. option lets the probing code bypass some of those checks if the
  186. parameter "relaxed_check=1" is passed to the module.
  187. endif # CPU_FREQ
  188. endmenu